.nav{
    width: 100%;
    height: 40px;
    position: relative;
    background-color: white;
    border-bottom: 2px solid red;
    
}
.category-type{
    width: 180px;
    height: 40px;
    background-color: red;
    float: left;
    text-align: center;
    line-height: 40px;
    position: absolute;
    left: 168px;   
    font-size: 15px;
}
.category-type a{
    color: white;
}
.banner{
    width: 1200px;
    height: 280px;
    margin: 0 auto;
    background-color: aqua;
    display: flex;
    flex-direction: row;
    justify-self: start;
    position: relative;
}
.left-banner{
    width: 180px;
    height: 280px;
    background-color:#333333;
    position: absolute;
}
.left-banner ul{
    width: 180px;
    height: 280px;
}
.categorys-item{
    width: 180px;
    height: 39px;
    border-bottom: 1px dotted #555; ;
}
.categorys-item:hover{
    background-color: red;
}
.item-content{
    width: 100px;
    height: 23px;
    padding: 8px 16px 8px 30px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}
.item-content a{
   

}
.inconfont{
    display: inline-block;
    width: 16px;
    height: 23px;
    float: left;

}
.category-title{
    width: 80px;
    float: left;
    margin: left 10px; 
    /* background-color: bisque; */
}
.category-title a{
    color: #fff;
}
.right-banner{
    width: 1200px;
    height: 280px;
    background: url(../images/banner图片2.png) no-repeat;
}
.gb-crazy{
    width: 100%;
    height: 142px;
    background-color: #f8f8f8;
   overflow: hidden;
  
}
.w{
    width: 1160px;
    margin: 0px auto;
    height: 42px;
    line-height: 42px;
    background-color: aqua;
    margin-top: 40px;
    padding-left: 40px;
    background: url(../images/crazy-icon.png) no-repeat left center;
}
.w h2{
    font-size: 28px;
}
.gb-index-main{
    margin: 0 auto;
    height: 145px;
    /* background-color: burlywood; */
}
.gb-index-main h2{
    font-size: 28px;
    margin-bottom: 20px;
}
.gb-index-list{
    width: 1200px;
    height: 42px;
    border: 1px solid #ccc;
}
.gb-btn-all{
    display: block;
    border: 1px solid #d2d2d2;
    height: 40px;
    line-height: 40px;
    text-align: center;
}
.gb-btn-all:hover{
    background-color: #ccc;
}